1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653db2ac9c5f6aa84c8d1e213c1d6394bb7e7947a5095ced5a117c3d9e75ed98. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71dab32c-5ed8-47da-aa44-e5cdc5d3ec17.json and https://artists.proofprofile.net/proofs/artist/71dab32c-5ed8-47da-aa44-e5cdc5d3ec17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68cf45f0c5baefe0d9dcc7c82413ec7e7dce6a6436c905d06223c467d08bb97. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIC2489921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11940017f9b34d4ed2457cdb33a2c1bf04e23dddb279f39f30d3ad462ab04f05. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2419290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef70659b0ae3fe61f848da4aa080c64a5ae49e2a399d051d5e02cd75941fdcf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2423442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5f6f52e5b9503d8b71523aac44c565696209b55376472794d90daf510f2046. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2436034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94503fac108dd58fe5798b519408148aa880f3fbe2757e6c98a6aead9e972d8b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2486707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080cd31f7be17a1e5807dd78e3e9c3ad76dbded659e05d6da7266cc0a6328256. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2429965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e2302a4c9602804c406b0139394faae7d7fb36cbb91c410bd61e530c705d35. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2466860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6a17e48c05c0decc3c4b70c09466a2503387a2a9fb4d5adc63bc619652a39c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2479779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a60474820c23c29d900acce06c72f78cff279de12d8029081a11eac83bbbc6d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2484292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431aba8ab7af8455359e06040f59b2d78f67417478cddc0ef5b9dcc5ba17a971. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2430223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255e6acffdf1eef48910b30f165a8b90102c437b2655758a69b7ac03ca696793. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9M2358713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf632027d3489f8c723bf9e7d47e593eca2e50f507d051e263b3f5cecc442a391. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9L2329809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afc6ff445c88b5f0fa4f6ea5da4a439df958105890afd097bc5dd9bb036eaf9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKDT2400606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcdb2d439a84a22f3ea29643662a8deb68c3d4a6c4623c9bf85c896084e779b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2552784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6379961b7d61b2fcb33ef689c68d2e40dd23e0c6a518eb3d402dd4d4cea012. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2358827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa041795dd57a5ae131427c6f0f913018d9bdde744edca0924398277330cf2b36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIG2424944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605a41df06be886c850bbe759c81d287ead60a758287274511bc137b8e1d19ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIS2497398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f8dcdf3c56ae6bb5cabc74c62d2b761ab09fd1a612e86793c9c1e29cec9a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2395708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f9be902894a934ab831b09b0242128215b538e64bcb0850ea4ac789187fa43. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM1841527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3f2ab4c7e8979198e4202c524fa611c1e25a54e5aee43077668f7bfcb9f3f4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2379642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11940017f9b34d4ed2457cdb33a2c1bf04e23dddb279f39f30d3ad462ab04f05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2419290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23992a1385eb6c441af89b1f57ca93594d1d2b4037bc3a05c5ec34c7a6909f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIJ2412327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803ab9990c1a21dd55d84549af5682f3c1480432b678496e8759a17bfdb44114. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2496640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162fed4809c0c8087a18e6de7f58bc68d052a30245b9b4dd0810c87288ccef21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2428587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab6bd970195937087bb57b61f74641c45e54dc577fefd65788456d3d1c9b10f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIS2460921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b38dc2f4f7a123c217fd9cb19d5add2db17dfe9eeff7ae167e7ba527d16770. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2457364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dbb6649769cd12ad94a9eecd8271c02585611aa2a647c66cda9b00e972c404. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7819573518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7844bbe4cca803ae4420295954540f8a0ed6af4d08e0921c2328c67696ea81. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92511966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5113e01186396f4635034b6cbae1b56f2e56a274352620dbb2bce5c991ed492e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2557971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b9784f37428e8996656ee39a112bdeaafb762947a400ceb863fdf2efc1c297. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2559303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa449c05a18aca175717001f240f062a04c32c75c8595bbd762ef5ff872062425. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2517531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe452a6011846b429aa286d9369885aad077e321081f2d8bdf483b07b340930. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2556745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985f6e50b9695cf9c556cfab28b76deb90f9265f82a7ee10d27564d58dda574b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2595515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70a27d5adcf1b77517902263842d3e43271475d23edb6abb1012dde666b7300. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2553218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35c1ea003904f76771ca82950f6fbbcf97519ed10bd24e4b80569f6d3a24745. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BK4DA2425994.